Search for a number in a string or in an array

[Esmeralda]

What would be the best way to search for a number within a string or an array in javascript? I'm currently using indexof - but if I am searching for 1, would it also return true if the number ends up being 11 or 111?

[gits]

hi ...

you are right ... but you may use a regEx here :

var s = 'adgf1';
var t = s.match(/1{1}/g);
 
alert(t.length);

that would give you an array of all occurences of 1 in the string s ... but what do you really want to check exactly?

kind regards

[Esmeralda]

I hadn't thought of using regex, but that may work as a great possiblity, thanks :) .

What I'm actually trying to do is look for a number within an array. The number is dynamically set as is the array. Indexof was working correctly, but then I realized my error.

Here is a snippet:

 var dispCA = new Array(<cfoutput query="getCA">#id#<cfif getCA.currentRow LT getCA.recordCount>,</cfif></cfoutput>);
var dispSup = new Array(<cfoutput query="getSup">#id#<cfif getSup.currentRow LT getSup.recordCount>,</cfif></cfoutput>);
var contID = document.getElementsByName('contactID');
 

for(var i=0;i<contID.length;i++)
{                         
 if(dispCA.join().indexOf(contID[i].value)>=0)
 {
    contID[i].checked = true;
 }
 else
 {
    contID[i].checked = false;
 }
}
 

Thank you for your help!

[gits]

hi ...

since you use arrays you may find the following article useful. I wouldn't use indexOf ... just 'real'-compare the id with the array-values ... something like this:

var a = ['2', '1', 'a'];
 
function arr_contains(arr, val) {
    var ret = false;
 
    for (var i = 0, l = arr.length; i < l; i++) {
        if (arr[i] === val) {
            ret = true;
            break;
        }
    }
 
    return ret;
}
 
// usage
alert(arr_contains(a, '1'));
 

kind regards

[Esmeralda]

Thank you again. I ended up using regEx and the search() function.

var contnum = new RegExp('/,?' + contID[i].value + ',?/');
if(dispCA.join().search(contnum)>=0)
{
 

It seems to work okay...